Alerts Overview

Alerts Overview

This section contains common information about alerts available in Network Eagle.

General information

Network Eagle supports a rich variety of alert mechanisms. It supports various email alert options, sound alerts and much more. You can use the standard Windows net send mechanism as a Network Eagle alert or even write your own batch scripts to be executed a service failure or a recovery situation occurs.

Alert is run when the special condition is satisfied. These conditions depend on the check status and can be one of the following:

On Recovery
The status of the previous check is failed while the status of the current check is successful. This situation is called service recovery and all alerts that should be run on recovery will be run.
On failure
The status of the previous check is successful while the current check is failed. This situation is called service failure and all alerts that should be run on failure will be run.
On every failure
The status of the previous check is failed. This condition does not depend on the result of the previous check.
The following table illustrates the difference between on recovery, on every recovery, on failure and on every failure conditions:
On Recovery On Every Recovery On Failure On Every Failure
failed failed       X
failed successful X X    
successful failed     X X
successful successful   X    
X - alert is activated under these circumstances.

Alert activation

After a check is finished and its status is switched from checking to failed or successful, the check manager tries to detect alerts that should be be activated. In case there are such alerts, the checking process is paused to activate alerts.

Note: Due to alert-specific settings (in some situations), alert activation can take significant time. Since counting down check intervals starts only after all alerts are activated, such situations can lead to a big difference between actual intervals between service checks and intervals set for this check.

Alerts are activated in the order they are defined.

See Also

Standard Alerts,
Professional Alerts,
Alert Repository, Message Formatting, Environment Window